FEMA flood zones · Colorado

Garfield County, Colorado Flood Zone Map

30 flood insurance claims·$93,717 paid·2 federal flood & hurricane disasters

Less than 1% of Garfield County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Garfield County, Colorado. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How Garfield County floods

Flash flooding and summer thunderstorms dominate the flood risk profile in Garfield County, Colorado. Over the past 30 years, NOAA records show 42 flash flood events resulting in 1 death, alongside 21 general flood events causing 1 additional death.

Recent events illustrate these hazards. In August 2023, slow-moving thunderstorms driven by monsoon moisture and the remnants of Tropical Storm Harold produced heavy rain, flash flooding, and debris flows across the county. Earlier in the season, in May 2023, accelerated snowmelt from a near-record snowpack generated high and fast flows that compromised low-lying recreational trails.

National Flood Insurance Program claims data indicates varying impacts across zones. Properties in high-risk Zone A experienced the highest frequency and severity, recording 12 claims with an average payout of $10,617 and an average recorded water depth of 10 inches. Meanwhile, unshaded and shaded Zone X properties recorded lower impacts, averaging payouts between $2,421 and $6,789 with average water depths of 1 to 3 inches. Homeowners in Zone A and low-lying areas near drainages should pay the closest attention to flood risks.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

Where the flood claims came from

54% of Garfield County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

26 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 5 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 1981, with 7 claims and $26,398 paid.

1979: 1 claims1980: 1 claims1981: 7 claims1982: 1 claims1984: 2 claims1992: 1 claims1993: 5 claims1995: 1 claims2002: 4 claims2003: 1 claims2014: 1 claims2019: 2 claims2023: 2 claims2024: 1 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

14 NOAA storm reports from Garfield County describe what happened, in the words of the forecasters who covered it. Read the Colorado flood stories →

Federal disasters

12 federal disaster declarations since 1977, 2 of them floods, coastal storms or hurricanes.

DisasterBegan
Pine Gulch FireAug 19, 2020
Grizzly Creek FireAug 13, 2020
Newcastle FireJun 19, 2007
Red Apple FireAug 31, 2006
Hurricane Katrina EvacuationAug 29, 2005
Co - Panorama Fire - 07/31/02Jul 31, 2002
Coal Seam FireJun 8, 2002
WildfiresApr 23, 2002

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

63 since 1996: 42 flash floods and 21 river or area floods.

EventDateDamage
FloodAug 24, 2023—
FloodAug 24, 2023$5,000
FloodMay 21, 2023— · 1 killed
FloodMay 21, 2023$500
Flash FloodAug 1, 2023—
Flash FloodJul 23, 2021$5,000
Flash FloodJul 22, 2020—
FloodJul 11, 2019$5,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flood · Aug 24, 2023. Remnants from Tropical Storm Harold lifted across the Desert Southwest. This, combined with already abundant subtropical moisture, resulted in widespread showers and thunderstorms across western Colorado. Storms were slow moving and produced heavy rain. As a result of the heavy rain, some flooding and debris flows occurred in portions of Gunnison, Garfield, Mesa, and Montezuma counties.

Flood · May 21, 2023. Accelerated snowmelt from a near-record snowpack due to above normal temperatures produced high and fast flow on the Colorado River. One such area was Glenwood Canyon, where an individual drowned in a rafting accident.

Flash Flood · Aug 1, 2023. Abundant monsoon moisture remained across Western Colorado. This led to another round of showers and thunderstorms across much of the region. Storms were slow moving and produced heavy rain. As a result of the heavy rain, some flash flooding and debris flows occurred in both Garfield and Eagle counties. Additionally, some stronger storms produced large hail up to an estimated inch in diameter near Carbondale.

Flash Flood · Jul 23, 2021. Abundant monsoon moisture remained in place across the Western Slope. As a result, another round of widespread showers and thunderstorms developed across the area with many storms producing heavy rain. This led to several reports of flash flooding and debris flows across portions of west-central and southwest Colorado.

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Garfield County

If a building in Garfield County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.